|Snow leopard in Wakhan District, Afghanistan|
|Distribution of snow leopard, 2017|
The snow leopard (Panthera uncia), also known as the ounce, is a large cat native to the mountain ranges of Central and South Asia. It is listed as Vulnerable on the IUCN Red List because the global population is estimated to number less than 10,000 mature individuals and decline about 10% until 2040, it is threatened by poaching and habitat destruction following infrastructural developments. It inhabits alpine and subalpine zones at elevations from 3,000 to 4,500 m (9,800 to 14,800 ft), ranging from eastern Afghanistan to Mongolia and western China. In the northern range countries, it also occurs at lower elevations.
Taxonomically, the snow leopard was long classified in the monotypic genus Uncia. Since phylogenetic studies revealed the relationships among Panthera species, it is considered a member of this genus. Two subspecies were described based on morphological differences, but genetic differences between the two have not been confirmed, it is therefore regarded a monotypic species.
- 1 Naming and etymology
- 2 Taxonomy and evolution
- 3 Characteristics
- 4 Distribution and habitat
- 5 Behavior and ecology
- 6 Threats
- 7 Conservation
- 8 Relationships with humans
- 9 See also
- 10 References
- 11 Further reading
- 12 External links
Naming and etymology
Both the Latinized specific epithet uncia and the occasional English name ounce are derived from the Old French once, originally used for the European lynx. Once itself is believed to have arisen by false splitting from an earlier variant of lynx, lonce – where lonce was interpreted as l'once, in which l' is the elided form of the French definite article la ('the'), leaving once to be perceived as the animal's name. This, like the English version ounce, came to be used for other lynx-sized cats, and eventually for the snow leopard.
Taxonomy and evolution
Felis uncia was the scientific name used by Johann Christian Daniel von Schreber in 1777 who described a snow leopard based on an earlier description by Georges-Louis Leclerc, Comte de Buffon, assuming that the cat occurred in Barbary, Persia, East India, and China. Uncia was proposed by John Edward Gray in 1854 who grouped Asian cats with a long and thick tail into this genus.
Felis irbis was proposed by Christian Gottfried Ehrenberg in 1830 who described a skin of a female snow leopard collected in the Altai Mountains in Siberia, he also clarified that several leopard skins were previously misidentified as snow leopard skins. Felis uncioides was proposed by Thomas Horsfield in 1855 for a snow leopard skin presented to the Museum of the East India Company.
Uncia uncia was used by Reginald Innes Pocock in 1930 when he reviewed skins and skulls of Panthera species from Asia, he also described morphological differences between leopard (P. pardus) and snow leopard skins. Panthera baikalensis-romanii was proposed by a Russian scientist in 2000 for a dark brown snow leopard skin from the Petrovsk-Zabaykalsky District, southern Transbaikal region.
It has been subordinated to the genus Panthera based on results of phylogenetic studies; until spring 2017, there was no evidence available for the recognition of subspecies. Results of a phylogeographic study published in September 2017 indicate that three subspecies should be recognised: P. u. uncia in the Pamir Mountains range countries, P. u. uncioides in the Himalayas and Qinghai, and P. u. irbis in Mongolia.
Based on phylogenetic analysis of DNA sequence sampled across the living Felidae, the snow leopard forms a sister group with the tiger. Genetic divergence time of this group is estimated at 4.62 to 1.82 million years. The snow leopard and the tiger probably diverged between 3.7 and 2.7 million years ago. A 2016 study revealed that the mitochondrial genomes of snow leopards and lions are more similar to each other than their nuclear genomes, indicating that they hybridised at some point in their evolution.
The snow leopard's fur is whitish to gray with black spots on head and neck, but larger rosettes on the back, flanks and bushy tail; the belly is whitish. Its eyes are pale green or grey in color, its muzzle is short and its forehead domed. Its nasal cavities are large; the fur is thick with hairs between 5 and 12 cm (2.0 and 4.7 in) long. Its body is stocky, short-legged and slightly smaller than the other cats of the genus Panthera, reaching a shoulder height of 56 cm (22 in), and ranging in head to body size from 75 to 150 cm (30 to 59 in), its tail is 80 to 105 cm (31 to 41 in) long. It weighs between 22 and 55 kg (49 and 121 lb), with an occasional large male reaching 75 kg (165 lb) and small female of under 25 kg (55 lb), its canine teeth are 28.6 mm (1.13 in) long and are more slender than those of the other Panthera species. In relation to the length of its skull and width of its palate, it has large nasal openings, which allow for increasing the volume of air inhaled with each breath, and at the same time for warming and humidifying cold dry air.
The snow leopard shows several adaptations for living in a cold, mountainous environment, its small rounded ears help to minimize heat loss. Its broad paws well distribute the body weight for walking on snow, and have fur on their undersides to increase the grip on steep and unstable surfaces; it also helps to minimize heat loss, its long and flexible tail helps to maintain balance in the rocky terrain. The tail is also very thick due to fat storage, and is very thickly covered with fur, which allows the cat to use it like a blanket to protect its face when asleep.
Distribution and habitat
The snow leopard is distributed from the west of Lake Baikal through southern Siberia, in the Kunlun Mountains, in the Russian Altai mountains, Sayan and Tannu-Ola Mountains, in the Tian Shan, across Kazakhstan, Kyrgyzstan, Tajikistan, and Uzbekistan to the Hindu Kush in eastern Afghanistan, Karakoram in northern Pakistan, in the Pamir Mountains, and in the high altitudes of the Himalayas in India, Nepal, and Bhutan, and the Tibetan Plateau. In Mongolia, it is found in the Mongolian and Gobi Altai Mountains and the Khangai Mountains. In Tibet, it is found up to the Altyn-Tagh in the north.
Potential snow leopard habitat in the Indian Himalayas is estimated at less than 90,000 km2 (35,000 sq mi) in the states of Jammu and Kashmir, Uttarakhand, Himachal Pradesh, Sikkim, and Arunachal Pradesh, of which about 34,000 km2 (13,000 sq mi) is considered good habitat, and 14.4% is protected. In the beginning of the 1990s, the Indian snow leopard population was estimated at roughly 200–600 individuals living across about 25 protected areas.
In summer, snow leopards usually live above the tree line on mountainous meadows and in rocky regions at altitudes from 2,700 to 6,000 m (8,900 to 19,700 ft). In winter, they come down into the forests to altitudes around 1,200 to 2,000 m (3,900 to 6,600 ft). Snow leopards prefer rocky, broken terrain, and can travel without difficulty in snow up to 85 cm (33 in) deep, although they prefer to use existing trails made by other animals.
- in Pakistan: Chitral National Park in the Khyber-Pakhtunkhwa region, Central Karakoram National Park and Khunjerab National Park in Gilgit-Baltistan, Deosai National Park, Naltar Wildlife Sanctuary, Baltistan Wildlife Sanctuary and several protected areas that are smaller than 300 km2 (120 sq mi);
- in India: Hemis National Park, Kishtwar National Park and Dachigam National Park in Ladakh, Jammu and Kashmir, Pin Valley National Park, Great Himalayan National Park in Himachal Pradesh, Nanda Devi National Park, Gangotri National Park and Valley of Flowers National Park in Uttarakhand, Khangchendzonga National Park, Dibang Wildlife Sanctuary, Hirpora Wildlife Sanctuary;
- in Nepal: Api Nampa Conservation Area, Dhorpatan Hunting Reserve, Shey-Phoksundo National Park, Annapurna Conservation Area, Manaslu Conservation Area, Langtang National Park, Sagarmatha National Park, Makalu Barun National Park and Kanchenjunga Conservation Area;
- in Bhutan: Jigme Dorji National Park, Wangchuck Centennial National Park, Bumdeling Wildlife Sanctuary,
- in China: Qomolangma National Nature Preserve and Sanjiangyuan National Nature Reserve on the Tibetan Plateau, Tomur National Conservation Zone in the western Tianshan Mountains, Qilianshan National Nature Reserve in the Qilian Mountains,
- in Uzbekistan: Chatkalskiy State Nature Reserve, Zaamin National Park, Ugam-Chatkal National Park, Hissar National Reserve;
- in Kazakhstan: Aksu-Zhabagly Nature Reserve
- in Kyrgyzstan: Sarychat-Ertash State Nature Reserve, Sary-Chelek Nature Reserve, Besh-Tash State Nature National Park, Kyrgyz-Ata National Park, Karakol National Park, Chychkan Wildlife Refuge;
- in Tajikistan: Pamir National Park
- in Russia: Katun Nature Reserve
- in Mongolia: Gobi Gurvansaikhan National Park, Ubsunur Hollow, at the international border of Mongolia and the Tuva Republic
Before 2003, the total wild snow leopard population was estimated at 4,080 to 6,500 individuals. In 2016, the global population was estimated at 4,678 to 8,745 individuals, suggesting that the total number of snow leopards was larger than previously thought.
|Range Country||Habitat area in km2||Estimated population|
Behavior and ecology
The snow leopard's vocalizations include meowing, grunting, prusten, and moaning, it can purr when exhaling. It cannot roar, despite possessing partial ossification of the hyoid bone; this partial ossification was previously thought to be essential for allowing the Panthera cats to roar, but new studies show that the ability to roar is due to other morphological features, especially of the larynx, which are absent in the snow leopard.
Snow leopards are solitary animals, but share a common space, they are active mostly at dawn until early morning and again in afternoons and early evenings. They mostly rest near cliffs and ridges that provide vantage points and shade. In Nepal's Shey-Phoksundo National Park, the home ranges of five adult radio-collared snow leopards overlapped to a large extent, though they rarely met, their individual home ranges ranged in size from 12 to 39 km2 (4.6 to 15.1 sq mi). Males moved between 0.5 and 5.45 km (0.31 and 3.39 mi) per day, and females between 0.2 and 2.25 km (0.12 and 1.40 mi), measured in straight lines between survey points, but they often zigzagged in the precipitous terrain. However, they also covered up to 7 km (4.3 mi) in a single night.
In Nepal's Shey Phoksundo National Park, up to 10 individuals inhabit an area of 100 km2 (40 sq mi); in habitats with sparse prey, though, an area of 1,000 km2 (400 sq mi) supports only five individuals. A study in the Gobi Desert lasting from 2008 to 2014 revealed that adult male snow leopards used a mean home range of 144–270 km2 (56–104 sq mi), while adult females ranged in areas of 83–165 km2 (32–64 sq mi), their home ranges overlapped less than 20%. These results indicate that about 40% of the 170 protected areas in snow leopard range countries are smaller than the home range of a single male snow leopard.
Like other cats, snow leopards use scent marks to indicate their territories and common travel routes; these are most commonly produced by scraping the ground with the hind feet before depositing urine or scat, but they also spray urine onto sheltered patches of rock. Females with her cubs usually stay together, and they rear them in dens in the mountains for extended periods.
Hunting and diet
The snow leopard is a carnivore and actively hunts its prey, it is an opportunistic hunter and also eats carrion. Its preferred wild prey species are Himalayan blue sheep (Pseudois nayaur), Himalayan tahr (Hemitragus jemlahicus), argali (Ovis ammon), markhor (Capra falconeri) and wild goat (C. aegagrus). It also preys on domestic livestock, it prefers prey ranging in weight from 36 to 76 kg (79 to 168 lb), but also hunts smaller mammals such as marmot, pika and vole species. The diet of the snow leopard varies across its range and with the time of year, and depends on prey availability. In the Himalayas, it preys mostly on Himalayan blue sheep and Siberian ibex (Capra sibirica). In the Karakoram, Tian Shan, Altai and Mongolia's Tost Mountains, its main prey consists of Siberian ibex, Thorold's deer (Cervus albirostris), Siberian roe deer (Capreolus pygargus) and argali. Other species hunted when available include red panda, wild boar, langur monkey, snow cock and Chukar partridge.
Snow leopards prefer to ambush prey from above, using broken terrain to conceal their approach, they will actively pursue prey down steep mountainsides, using the momentum of their initial leap to chase animals for up to 300 m (980 ft). They kill with a bite to the neck, and may drag the prey to a safe location before feeding, they consume all edible parts of the carcass, and can survive on a single Himalayan blue sheep for two weeks before hunting again. Annual prey needs appears to be 20–30 adult blue sheep.
The snow leopard is capable of killing most animals in its range, with the probable exception of the adult male yak, it also eats a significant amount of vegetation, including grass and twigs. Snow leopards have been recorded to hunt in pairs successfully, especially mating pairs.
Where snow leopards prey on domestic livestock, they are subject to conflict with humans. However, even in Mongolia, where wild prey has been reduced, and interactions with humans are common, domestic livestock, mainly domestic sheep, comprises less than 20% of snow leopard diet. Herders kill snow leopards to prevent them from taking their livestock; the loss of prey animals due to overgrazing by domestic livestock, poaching, and defense of livestock are the major drivers for the decreasing population of the snow leopard. The snow leopard has not been reported to attack humans, and appears to be the least aggressive to humans of all big cats; as a result, they are easily driven away from livestock; they readily abandon their kills when threatened, and may not even defend themselves when attacked.
Reproduction and life cycle
Snow leopards become sexually mature at two to three years, and normally live for 15–18 years in the wild. In captivity they can live for up to 25 years. Oestrus typically lasts from five to eight days, and males tend not to seek out another partner after mating, probably because the short mating season does not allow sufficient time. Paired snow leopards mate in the usual felid posture, from 12 to 36 times a day, they are unusual among large cats in that they have a well-defined birth peak. They usually mate in late winter, marked by a noticeable increase in marking and calling. Females have a gestation period of 90–100 days, so the cubs are born between April and June.
The mother gives birth in a rocky den or crevice lined with fur shed from her underside. Litter sizes vary from one to five cubs, but the average is 2.2. The cubs are blind and helpless at birth, although already with a thick coat of fur, and weigh from 320 to 567 g (11.3 to 20.0 oz). Their eyes open at around seven days, and the cubs can walk at five weeks and are fully weaned by 10 weeks; also when they are born, they have full black spots which turn into rosettes as they grow to adolescence.
The cubs leave the den when they are around two to four months of age, but remain with their mother until they become independent after around 18–22 months. Once independent, they disperse over considerable distances, even crossing wide expanses of flat terrain to seek out new hunting grounds; this likely helps reduce the inbreeding that would otherwise be common in their relatively isolated environments.
The major threat to snow leopard populations is poaching and illegal trade of skins and body parts. In China, 103 to 236 animals are poached every year, in Mongolia between 34 and 53, in Pakistan between 23 and 53, in India from 21 to 45, and in Tajikistan 20 to 25. Poaching is linked to prey declines and livestock depredation.
Numerous agencies are working to conserve the snow leopard and its threatened mountain ecosystems; these include the Snow Leopard Trust, the Snow Leopard Conservancy, the Snow Leopard Network, the Cat Specialist Group, TRAFFIC, and the Panthera Corporation.
These groups and various national governments from the snow leopard’s range, nonprofits, and donors from around the world worked together at the 10th International Snow Leopard Conference in Beijing, their focus on research, community programs in snow leopard regions, and education programs are aimed at understanding the cat's needs, as well as the needs of the villagers and herder communities juxtaposed with the snow leopards' habitats.
Global Snow Leopard Forum
In 2013, government leaders and officials from all 12 countries encompassing the snow leopard's range (Afghanistan, Bhutan, China, India, Kazakhstan, Kyrgyz Republic, Mongolia, Nepal, Pakistan, Russia, Tajikistan, and Uzbekistan) came together at the Global Snow Leopard Forum (GSLF) initiated by the President Almazbek Atambayev of the Kyrgyz Republic, and the State Agency on Environmental Protection and Forestry under the government of the Kyrgyz Republic; the meeting was held in Bishkek, the capital of the Kyrgyz Republic, and all countries agreed that the snow leopard and the high mountain habitat it lives in need trans-boundary support to ensure a viable future for snow leopard populations, as well as to safeguard their fragile environment. The event brought together many partners, including NGOs like the Snow Leopard Conservancy, the Snow Leopard Trust, and the Nature and Biodiversity Conservation Union; also supporting the initiative were the Snow Leopard Network, the World Bank's Global Tiger Initiative, the United Nations Development Programme, the World Wild Fund for Nature, the United States Agency for International Development, and Global Environment Facility.
At the GSLF meeting, the 12 range countries signed the Bishkek Declaration to "acknowledge that the snow leopard is an irreplaceable symbol of our nations' natural and cultural heritage and an indicator of the health and sustainability of mountain ecosystems; and we recognize that mountain ecosystems inhabited by snow leopards provide essential ecosystem services, including storing and releasing water from the origins of river systems benefitting one-third of the world’s human population; sustaining the pastoral and agricultural livelihoods of local communities which depend on biodiversity for food, fuel, fodder, and medicine; and offering inspiration, recreation, and economic opportunities."
Global Snow Leopard and Eco-system Protection Program
Out of these efforts was formed a cooperative support effort, the Global Snow Leopard and Eco-system Protection Program (GSLEP); the GSLEP is a joint initiative of range country governments, international agencies, civil society, and the private sector. Its goal is to secure the long-term survival of the snow leopard in its natural ecosystem.
The goal of the GSLEP is for the 12 snow leopard range countries, with support from conservation agencies, NGOs and others to work together to identify and secure at least 20 healthy populations of snow leopards across the cat’s range by 2020, or "20 by 2020". Many of these populations will cross international boundaries.
The three criteria that will secure healthy populations of snow leopards are populations that represent at least 100 breeding age snow leopards, contain adequate and secure prey populations and have connectivity to other snow leopard populations.
This is an interim goal for the years through to 2020. During the coming years, agreement will be reached on the steps needed to achieve the ultimate goal of ensuring that healthy snow leopard populations remain the icon of the mountains of Asia for generations to come.
2015 designated International Year of the Snow Leopard
To help spread the word amongst the people, government authorities, and conservation groups in each range country, 2015 was designated the International Year of the Snow Leopard as part of the GSLEPP's work. All range-country governments, nongovernmental and inter-governmental organizations, local communities, and various private sector businesses pledged to take the year as an opportunity to further work towards conservation of snow leopards and their high-mountain ecosystems.
In 2008, there were approximately 600 snow leopards in zoos around the world. In the Richmond Metropolitan Zoo in Virginia, in the United States of America, snow leopard cubs were born in 2016.
Much progress has been made in securing the survival of the snow leopard, with them being successfully bred in captivity. Females usually give birth to two to three cubs in a litter, but can give birth to up to seven in some cases.
Relationships with humans
Attacks on humans
Snow leopard attacks on humans are rare; only two instances are known. On July 12, 1940, in Maloalmaatinsk gorge near Almaty, a rabid snow leopard attacked two men during the day and inflicted serious injuries on both. In the second case, not far from Almaty, an old, toothless, emaciated snow leopard unsuccessfully attacked a passerby in winter; it was captured and carried to a local village. There are no other records of any snow leopard attacking a human being.
A 2008 Natural World episode, "Snow Leopard – Beyond the Myth", interviewed a couple with a goat farm in Pakistan; the woman was bowled over by a snow leopard escaping an enclosure where it had been feeding on the livestock, but she was not attacked by the cat, despite fainting and being helpless; the film crew went to some lengths to demonstrate that the cat was primarily hunting wild prey and was often ranging far outside the area, as they hoped to prevent local farmers from shooting it. Nevertheless, they also found evidence of other sightings of the cats around nearby human settlements, and of repeated attacks on livestock (some of them unsuccessful).
The snow leopard in heraldry is sometimes known in English as the ounce; the cat has long been used as a political symbol, the Aq Bars ('White Leopard'), by Tatars, Kazakhs, and Bulgars, among others. A snow leopard is found on the official seal of the city of Almaty, Kazakhstan, and the former 10,000 Kazakhstani tenge banknote also featured one on the reverse. A mythical winged Aq Bars is found in the national coat of arms of Tatarstan, the seal of the city of Samarqand, Uzbekistan, and (also with a crown) the old coat of arms of the Kazakh capital, Nur-Sultan. In Kyrgyzstan, it has been used in highly stylized form in the modern emblem of the capital, Bishkek, and the same art has been integrated into the badge of the Kyrgyzstan Girl Scouts Association. A crowned snow leopard features in the arms of Shushensky District, Krasnoyarsk Krai, Russia.
In the media
Documentary footage of the snow leopard is scarce. While such coverage would not be remarkable with regard to common species, wildlife video of the snow leopard is difficult to obtain due to the animal's rarity and the human inaccessibility to much of its natural habitat.
The BBC One TV series Planet Earth had a segment on snow leopards; the series took some of the first video of snow leopards in the wild, and also featured a snow leopard hunting a markhor. The episode Mountains of Planet Earth II, aired in November 2016, featured the rather violent mating fights of snow leopards, as well as a snow leopard's chuffing and wailing.
Nisar Malik, a Pakistani journalist, and Mark Smith, a cameraman who had worked on the Planet Earth segment, spent a further 18 months filming snow leopards in the Hindu Kush for the BBC Two series Natural World episode "Snow Leopard – Beyond the Myth"; the cat has been featured in segments of other episodes of the same series.
In Philip Pullman's 1995–2000 fantasy trilogy His Dark Materials, Lord Asriel's dæmon is a snow leopard named Stelmaria.
- McCarthy, T.; Mallon, D.; Jackson, R.; Zahler, P.; McCarthy, K. (2017). "Panthera uncia". The IUCN Red List of Threatened Species. 2017: e.T22732A50664030. doi:10.2305/IUCN.UK.2017-2.RLTS.T22732A50664030.en.
- McCarthy, T. M.; Chapron, G., eds. (2003). Snow Leopard Survival Strategy (PDF). Seattle, USA: International Snow Leopard Trust and Snow Leopard Network.
- Janecka, J. E.; Jackson, R.; Yuquang, Z.; Diqiang, L.; Munkhtsog, B.; Buckley-Beason, V.; Murphy, W. J. (2008). "Population Monitoring of Snow Leopards Using Noninvasive Genetics". Cat News. 48: 7–10.
- Wozencraft, W.C. (2005). "Species Uncia uncia". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 548. ISBN 978-0-8018-8221-0. OCLC 62265494.
- Johnson, W. E.; Eizirik, E.; Pecon-Slattery, J.; Murphy, W. J.; Antunes, A.; Teeling, E.; O'Brien, S. J. (2006). "The late Miocene radiation of modern Felidae: a genetic assessment". Science. 311 (5757): 73–77. Bibcode:2006Sci...311...73J. doi:10.1126/science.1122277. PMID 16400146.
- Davis, B. W.; Li, G.; Murphy, W. J. (2010). "Supermatrix and species tree methods resolve phylogenetic relationships within the big cats, Panthera (Carnivora: Felidae)" (PDF). Molecular Phylogenetics and Evolution. 56 (1): 64–76. doi:10.1016/j.ympev.2010.01.036. PMID 20138224.
- Kitchener, A. C.; Driscoll, C. A.; Yamaguchi, N. (2016). "What is a Snow Leopard? Taxonomy, Morphology, and Phylogeny". In McCarthy, T.; Mallon, D. (eds.). Snow Leopards. Amsterdam, Boston, Heidelberg, London, New York: Academic Press. pp. 3–11. ISBN 9780128024966.
- Kitchener, A. C.; Breitenmoser-Würsten, C.; Eizirik, E.; Gentry, A.; Werdelin, L.; Wilting, A.; Yamaguchi, N.; Abramov, A. V.; Christiansen, P.; Driscoll, C.; Duckworth, J. W.; Johnson, W.; Luo, S.-J.; Meijaard, E.; O’Donoghue, P.; Sanderson, J.; Seymour, K.; Bruford, M.; Groves, C.; Hoffmann, M.; Nowell, K.; Timmons, Z.; Tobe, S. (2017). "A revised taxonomy of the Felidae: The final report of the Cat Classification Task Force of the IUCN Cat Specialist Group" (PDF). Cat News. Special Issue 11: 69.
- Allen, E. A. (1908). "English Doublets". Publications of the Modern Language Association of America. New Series 16. 23 (1): 184–239. doi:10.2307/456687. JSTOR 456687.
- Oxford English Dictionary, Oxford University Press. 1933: Ounce
- Liddell, H. G. & R. Scott (1940). "πάνθηρ". A Greek-English Lexicon, revised and augmented. Oxford: Clarendon Press.
- Schreber, J. C. D. (1777). "Die Unze". Die Säugethiere in Abbildungen nach der Natur mit Beschreibungen. Erlangen: Wolfgang Walther. pp. 386–387.
- Gray, J. E. (1854). "The ounces". Annals and Magazine of Natural History. 2nd series (14): 394.
- Ehrenberg, C. G. (1830). "Observations et données nouvelles sur le tigre du nord et la panthère du nord, recueillies dans le voyage de Sibérie fait par M.A. de Humboldt, en l'année 1829". Annales des sciences naturelles, Zoologie. 21: 387–412.
- Horsfield, T. (1855). "Brief notices of several new or little-known species of Mammalia, lately discovered and collected in Nepal, by Brian Houghton Hodgson". The Annals and Magazine of Natural History: Including Zoology, Botany, and Geology. 2. 16: 101−114. doi:10.1080/037454809495489.
- Pocock, R. I. (1930). "The panthers and ounces of Asia. Part II; the panthers of Kashmir, India, and Ceylon". Journal of the Bombay Natural History Society. 34 (2): 307–336.
- Medvedev, D. G. (2000). "Morfologicheskie otlichiya irbisa iz Yuzhnogo Zabaikalia" [Morphological differences of the snow leopard from Southern Transbaikalia]. Vestnik Irkutskoi Gosudarstvennoi Sel'skokhozyaistvennoi Akademyi [Proceedings of Irkutsk State Agricultural Academy. 20: 20–30.
- Janecka, J. E.; Zhang, Y.; Li, D.; Munkhtsog, B.; Bayaraa, M.; Galsandorj, N.; Wangchuk, T. R.; Karmacharya, D.; Li, J.; Lu, Z. and Uulu, K. Z. (2017). "Range-Wide Snow Leopard Phylogeography Supports Three Subspecies". Journal of Heredity. 108 (6): 597−607. doi:10.1093/jhered/esx044. PMID 28498961.CS1 maint: Multiple names: authors list (link)
- Werdelin, L.; Yamaguchi, N.; Johnson, W. E.; O'Brien, S. J. (2010). "Phylogeny and evolution of cats (Felidae)". In Macdonald, D. W.; Loveridge, A. J. (eds.). Biology and Conservation of Wild Felids. Oxford, UK: Oxford University Press. pp. 59–82. ISBN 978-0-19-923445-5.
- Mazák, J.H.; Christiansen, P.; Kitchener, A.C.; Goswami, A. (2011). "Oldest known pantherine skull and evolution of the tiger". PLoS ONE. 6 (10): e25483. Bibcode:2011PLoSO...625483M. doi:10.1371/journal.pone.0025483. PMC 3189913. PMID 22016768.
- Li, G.; Davis, B. W.; Eizirik, E.; Murphy, W. J. (2016). "Phylogenomic evidence for ancient hybridization in the genomes of living cats (Felidae)". Genome Research. 26 (1): 1–11. doi:10.1101/gr.186668.114. PMC 4691742. PMID 26518481.
- Hemmer, H. (1972). "Uncia uncia" (PDF). Mammalian Species. 20 (20): 1–5. doi:10.2307/3503882. JSTOR 3503882. Archived from the original (PDF) on 2012-04-01.
- Sunquist, M.; Sunquist, F. (2002). "Snow leopard Uncia uncia (Schreber, 1775)". Wild Cats of the World. Chicago: University of Chicago Press. pp. 377–394. ISBN 978-0-226-77999-7.
- Christiansen, P. (2007). "Canine morphology in the larger Felidae: implications for feeding ecology". Biological Journal of the Linnean Society. 91 (4): 573–592. doi:10.1111/j.1095-8312.2007.00819.x.
- Torregrosa, V.; Petrucci, M.; Pérez-Claros, J. A.; Palmqvist, P. (2010). "Nasal aperture area and body mass in felids: Ecophysiological implications and paleobiological inferences". Geobios. 43 (6): 653–661. doi:10.1016/j.geobios.2010.05.001.
- Chadwick, D. H. (2008). "Out of the Shadows". National Geographic. Retrieved 2010-01-29.
- Heptner, V. G.; Sludskij, A. A. (1992) . "Snow Leopard, Ounce [Irbis]". Mlekopitajuščie Sovetskogo Soiuza. Moskva: Vysšaia Škola [Mammals of the Soviet Union. Volume II, Part 2. Carnivora (Hyaenas and Cats)]. Washington DC: Smithsonian Institution and the National Science Foundation. pp. 276–319.
- Simms, A.; Moheb, Z.; Salahudin; Ali, H.; Ali, I.; Wood, T. (2011). "Saving threatened species in Afghanistan: snow leopards in the Wakhan Corridor". International Journal of Environmental Studies. 68 (3): 299−312. doi:10.1080/00207233.2011.577147.
- Johansson, Ö.; Rauset, G. R.; Samelius, G.; McCarthy, T.; Andrén, H.; Tumursukh, L.; Mishra, C. (2016). "Land sharing is essential for snow leopard conservation" (PDF). Biological Conservation. 203 (203): 1–7. doi:10.1016/j.biocon.2016.08.034.
- Devkota, B. P.; Silwal, T.; Shrestha, B. P.; Sapkota, A. P.; Lakhey, S. P.; Yadav, V. K. (2017). "Abundance of snow leopard (Panthera uncia) and its wild prey in Chhekampar VDC, Manaslu Conservation Area, Nepal". Banko Janakari. 27 (1): 11–20. doi:10.3126/banko.v27i1.18545.
- Leki; Thinley, P.; Rajaratnam, R. & Shrestha, R. (2018). "Establishing baseline estimates of blue sheep (Pseudois nayaur) abundance and density to sustain populations of the vulnerable snow leopard (Panthera uncia) in Western Bhutan". Wildlife Research. 45 (1): 38–46. doi:10.1071/WR16218.CS1 maint: Multiple names: authors list (link)
- Jamtsho, Y. and Katel, O. (2019). "Livestock depredation by snow leopard and Tibetan wolf: Implications for herders' livelihoods in Wangchuck Centennial National Park, Bhutan". Pastoralism. 9 (1): 1. doi:10.1186/s13570-018-0136-2.CS1 maint: Multiple names: authors list (link)
- Jackson, R. (1998). "People-Wildlife Conflict Management in the Qomolangma Nature Preserve, Tibet" (PDF). In Wu Ning; D. Miller; Lhu Zhu; J. Springer (eds.). Tibet's Biodiversity: Conservation and Management. Proceedings of a Conference, August 30 – September 4, 1998. Tibet Forestry Department and World Wide Fund for Nature. China Forestry Publishing House. pp. 40–46.
- Liu, Y.; Weckworth, B.; Li, J.; Xiao, L.; Zhao, X.; Lu, Z. (2016). "China: The Tibetan Plateau, Sanjiangyuan Region". In McCarthy, T.; Mallon, D. (eds.). Snow Leopards. Amsterdam, Boston, Heidelberg, London, New York: Academic Press. pp. 513–521. ISBN 9780128024966.
- Ming, M.; Feng, X.; Turghan, M.; Shoujin, Y. (2004). Report on Snow Leopard (Uncia uncia) Surveys in Tomur, Xinjiang, China (PDF). Xinjiang: Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences.
- Alexander, J. S.; Shi, K.; Tallents, L. A.; Riordan, P. (2016). "On the high trail: examining determinants of site use by the Endangered snow leopard Panthera uncia in Qilianshan, China" (PDF). Oryx. 50 (2): 231–238. doi:10.1017/S0030605315001027.
- Esipov, A.; Bykova, E.; Protas, Y.; Aromov, B. (2016). "Central Asia: Uzbekistan". In McCarthy, T.; Mallon, D. (eds.). Snow Leopards. Amsterdam, Boston, Heidelberg, London, New York: Academic Press. pp. 439–447. ISBN 9780128024966.
- Paltsyn, M.; Poyarkov, A.; Spitsyn, S.; Kuksin, A.; Istomov, S.; Gibbs, J.P.; Jackson, R. M.; Castner, J.; Kozlova, S.; Karnaukhov, A.; Malykh, S. (2016). "Northern Range: Russia". In McCarthy, T.; Mallon, D. (eds.). Snow Leopards. Amsterdam, Boston, Heidelberg, London, New York: Academic Press. pp. 501–511. ISBN 9780128024966.
- Weissengruber, G. E.; Forstenpointner, G.; Peters, G.; Kübber-Heiss, A.; Fitch, W. T. (2002). "Hyoid apparatus and pharynx in the lion (Panthera leo), jaguar (Panthera onca), tiger (Panthera tigris), cheetah (Acinonyx jubatus) and domestic cat (Felis silvestris f. catus)". Journal of Anatomy. 201 (3): 195–209. doi:10.1046/j.1469-7580.2002.00088.x. PMC 1570911. PMID 12363272.
- Jackson, R.; Ahlborn, G. (1988). "Observations on the ecology of snow leopard in west Nepal" (PDF). In Freeman, H. (ed.). Proceedings of the Fifth International Snow Leopard Symposium. India: International Snow Leopard Trust. pp. 65−97.
- Jackson, R. (1996). Home Range, Movements and Habitat Use of Snow Leopard in Nepal (PhD). London: University of London.
- "The snow leopard behavior". Snow Leopard Trust.
- Johansson, Ö.; McCarthy, T.; Samelius, G.; Andrén, H.; Tumursukh, L.; Mishra, C. (2015). "Snow leopard predation in a livestock dominated landscape in Mongolia" (PDF). Biological Conservation. 184: 251–258. doi:10.1016/j.biocon.2015.02.003. Retrieved 25 March 2015.
- Lyngdoh, S.; Shrotriya, S.; Goyal, S. P., Clements, H.; Hayward, M. W.; Habib, B. (2014). "Prey preferences of the snow leopard (Panthera uncia): regional diet specificity holds global significance for conservation". PLOS ONE. 9 (2): e88349. Bibcode:2014PLoSO...988349L. doi:10.1371/journal.pone.0088349. PMC 3922817. PMID 24533080.
- Shehzad, W.; McCarthy, T. M.; Pompanon, F.; Purevjav, L.; Coissac, E.; Riaz, T.; Taberlet, P. (2012). "Prey Preference of Snow Leopard (Panthera uncia) in South Gobi, Mongolia". PLoS ONE. 7 (2): e32104. Bibcode:2012PLoSO...732104S. doi:10.1371/journal.pone.0032104. PMC 3290533. PMID 22393381.
- "Snow Leopard Fact Sheet" (PDF). snowleopard.org. 2008. Retrieved 2008-07-03.
- Macri, A. M. & E. Patterson-Kane (2011). "Behavioural analysis of solitary versus socially housed snow leopards (Panthera uncia), with the provision of simulated social contact". Applied Animal Behaviour Science. 130 (3–4): 115–123. doi:10.1016/j.applanim.2010.12.005.
- Pacifici, M.; Santini, L.; Di Marco, M.; Baisero, D., Francucci, L., Grottolo Marasini, G., Visconti, P. and Rondinini, C. (2013). "Generation length for mammals". Nature Conservation (5): 87–94.CS1 maint: Multiple names: authors list (link)
- Nowell, K., Li, J., Paltsyn, M. and Sharma, R.K. (2016). An Ounce of Prevention: Snow Leopard Crime Revisited. Cambridge, UK: TRAFFIC. ISBN 978-1-85850-409-4.CS1 maint: Multiple names: authors list (link)
- Forrest, J. L.; Wikramanayake, E.; Shrestha, R.; Areendran, G.; Gyeltshen, K.; Maheshwari, A.; Mazumdar, S.; Naidoo, R.; Thapa, G. J.; Thapa, K. (2012). "Conservation and climate change: Assessing the vulnerability of snow leopard habitat to treeline shift in the Himalaya" (PDF). Biological Conservation. 150 (1): 129–135. doi:10.1016/j.biocon.2012.03.001.
- Theile, Stephanie (2003). "Fading footprints; the killing and trade of snow leopards". TRAFFIC International, ISBN 1-85850-201-2
- "Cats in the Clouds" Archived 2009-06-15 at the Wayback Machine, Australian Broadcasting Corporation (2009-05-06). Retrieved 27 June 2009.
- "Bishkek Declaration", Global Snow Leopard Forum October 2013. Retrieved 2015-02-27.
- Securing at least 20 healthy populations of snow leopards across the cat’s range by 2020, Global Snow Leopard and Eco-System protection Program October 2013. Retrieved 2015-04-15.
- "International Year of the Snow Leopard", Saving Snow Leopards Report (2015-02-06). Retrieved 2015-02-27.
- Curran, Colleen (September 2, 2016). "Snow leopard cubs go on exhibit at the Metro Richmond Zoo". Richmond Times-Dispatch. Retrieved 2 September 2016.
- Nowell, K.; Jackson, P., eds. (1996). Wild cats: Status survey and conservation action plan. Gland, Switzerland: International Union for Conservation of Nature. pp. 193–195. ISBN 9782831700458. Retrieved 21 March 2013.
- Inskip, C.; Zimmermann, A. (2009). "Human-felid conflict: A review of patterns and priorities worldwide". Oryx. 43 (1): 18–34. doi:10.1017/S003060530899030X.
- Snow Leopard – Beyond the Myth. Natural World. 4 January 2008.
- "The Official Web Gateway to Pakistan". www.pakistan.gov.pk. Archived from the original on 2016-11-28. Retrieved 2016-10-23.
- Press Office – Planet Earth firsts. BBC (2006-02-01). Retrieved 2012-08-23.
- BBC Two – Natural World, 2007–2008, Snow Leopard- Beyond the Myth. BBC.co.uk (2008-09-23). Retrieved 2012-08-23.
- Janczewski, Dianne N.; Modi, William S.; Stephens, J. Claiborne; O'Brien, Stephen J. (1995). "Molecular Evolution of Mitochondrial 12S RNA and Cytochrome b Sequences in the Pantherine Lineage of Felidae". Molecular Biology and Evolution. 12 (4): 690–707. doi:10.1093/oxfordjournals.molbev.a040232. PMID 7544865.
- Theile, Stephanie. 2003. Fading Footprints: The Killing and Trade of Snow Leopards. TRAFFIC International. ISBN 1-85850-201-2.
- Jackson, Rodney; Hillard, Darla (June 1986). "Tracking the Elusive Snow Leopard". National Geographic. Vol. 169 no. 6. pp. 793–809. ISSN 0027-9358. OCLC 643483454.
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|Wikispecies has information related to Panthera uncia|
- Snow Leopard Network
- Snow Leopard Conservancy
- Snow Leopard Program. Panthera.org
- Snow Leopard Program. World Wildlife Fund
- Snow Leopard. IUCN/SSC Cat Specialist Group
- Snow Leopard Gallery. National Geographic
- Snow Leopard. Wildscreen Arkive
- "Silent Roar: Searching for the Snow Leopard". PBS Nature
- Snow Leopard. BBC Nature
- Nepal's Snow Leopard Action Plan yet to be implemented. Wildlife Times
- Snow Leopard. Paradise Wildlife Park